Yog tias koj tau taug qab cov neeg rau zaub mov poob rov qab mus rau qhov tsis meej pem, koj paub tias electromagnetic cuam tshuam (EMI) tsis yog qhov teeb meem theoretical. Ib lub xov tooj ntawm tes nyob ze, qhov yuam kev UPS, lossis txawm tias xob laim tuaj yeem ua suab nrov rau hauv cov kab teeb liab. Qhov tshwm sim? Me ntsis yuam kev, kev sib kho poob, los yog corrupted cia.
Ntawm pebsteel zeb thiab trading rooj, engineers nquag nug: "Dab tsi thickness kuv xav tau rau 100 dB attenuation?" lossis "Puas galvanized txheej cuam tshuam rau siab -frequency shielding?" Cov lus nug no tsim nyog cov lus teb hauv physics, tsis yog kev lag luam.
Vim li cas Steel?
Tooj liab ua tau zoo, thiab aluminium yog lub teeb. Tab sis rau tag nrho -chav Faraday tawb, steel yeej ntawm peb suav:
- Cov qauv rigidity-koj tuaj yeem tsim cov khoom thauj-cov phab ntsa, pem teb, thiab ru tsev.
- Sib nqus permeability-nws absorbs tsawg- zaus sib nqus teb zoo dua li cov hlau tsis yog-ferrous.
- Tus nqi ib decibel-koj tau txais kev tiv thaiv ntau dua ib duas, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv loj.
Peb muabtxias-rolled coilsrau tej yaam num xws li 10-rack pods mus rau 500-m² shielded halls. Qhov yuav tsum tau muaj: zoo ib yam gauge thiab weldable npoo.
Key Parameters
Kev tiv thaiv kev ua tau zoo (SE) yog ntsuas hauv decibels. 60 dB txhais tau tias 1,000-fold txo; 100 dB txhais tau tias 100,000-fold. Feem ntau cov chaw lag luam cov ntaub ntawv tsom rau 80-100 dB hla 100 kHz txog 10 GHz-tso txaus los thaiv 4G / 5G, Wi-Fi, thiab radar pulses.
Tab sis steel ib leeg tsis xa tus lej ntawd. Kev ua tau zoo tiag tiag nyob ntawm:
Nruam seam welding- qhov khoob me me li 0.5 hli tuaj yeem xau mus txog 20 dB.
Thickness uniformity-peb cov coils tuav ± 0.05 mm kam rau ua, ua kom cov welds zoo ib yam.
Nto tiav- liab qab lossis zinc-coated? Zinc ntxiv kev tiv thaiv corrosion, tab sis cov khaubncaws sab nraud povtseg hnyav yuav xav tau kev ntxuav ua ntej siv cov gaskets.
Tshaj -qhov tshwj xeeb thickness (piv txwv li, 4 hli) tsis boost shielding tshaj 2-3 mm rau steel. Qhov tseem ceeb tshaj yog qhov tsis muaj qhov thiab kev ncaj ncees ntawm daim ntawv cog lus hauv av.
Common Pitfalls
Ib qho yuam kev tsis tu ncua: kho kev tiv thaiv raws li kev xav tom qab. Retrofitting feem ntau yuam kom muaj kev sib haum xeeb-cov tais cable uas tsis tuaj yeem ua kom huv si, lossis lub qhov rooj tsis muaj tus ntiv tes tsim nyog- cov khoom sib cuag. Ua ke tiv thaiv los ntawm ib hnub kom txuag nyiaj thiab tsis txhob muaj qhov sib txawv ntawm kev ua haujlwm.
Lwm qhov yuam kev: tsis quav ntsej lub hauv paus system. Lub tawb Faraday yuav tsum khi rau ib lub ntiaj teb taw tes nrog kev tiv thaiv qis dua 1 ohm. Ntau qhov chaw tsim cov voj voog hauv av uas ua raws li cov kav hlau txais xov tsis txhob txwm ua, ua rau EMI ua phem.
Peb Lub Luag Haujlwm
Peb tsis tsim chav; peb muab cov khoom siv raw uas ua rau nws ua haujlwm. Peb cov khaub thuas- dov coils tuaj nyob rau hauv thicknesses ntawm 1.5 hli mus rau 5.0 hli, nrog kub -dip galvanizing los yog electro-zinc txheej xaiv. Peb txiav kom ntev yog tias xav tau, thiab peb muab cov ntaub ntawv kuaj xyuas zeb ua pov thawj cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv tshuab- qhov tseem ceeb rau kev tsim nyog cov txheej txheem weld.
Txhua qhov project muaj nws tus kheej nuance. Qee qhov xav tau ntxiv -wide coils kom txo cov seams; lwm tus nyiam ua ntej - punched qhov rau modular thav duab. Peb thov kom muaj qib thiab ua tiav uas haum rau koj cov txheej txheem fabrication-tsis muaj generic"ib-loj- haum-tag nrho" suab.
Npaj Ua Ntej
Cov chaw zov me nyuam yeej tsis zoo li qub. Koj yuav ntxiv racks, hloov pauv hloov, lossis hloov cov cua txias. Chav tsev shielded ua los ntawm cov hlau zoo yog hloov tau -koj tuaj yeem txuas cov hlua khi lossis ntsia hlau nkag tshiab yam tsis muaj kev puas tsuaj rau daim ntaub thaiv, yog tias koj ua raws li kev rov ua kom zoo.
Peb tau pom qhov tshwm sim ntawm cov hlau pheej yig: warped panels, welding nyuaj, thiab tsis zoo corrosion kuj uas yuam kev hloov thaum ntxov. Kev nqis peev hauv cov khoom tsim nyog ua ntej yog pheej yig dua nyob rau lub sijhawm ntev.
Yog li, txawm hais tias koj tab tom sau cov lus qhia tshwj xeeb rau kev tsim kho tshiab lossis ntsuas kev sib tw rau cov ntaub thaiv npog, xav txog cov hlau tsis yog cov khoom lag luam, tab sis yog lub hauv paus ntawm koj qhov kev tiv thaiv hluav taws xob. Tau txais txoj cai ntawd, thiab txhua yam khoom siv -qhov rooj, qhov cua, lim- yuav ua tau raws li qhov xav tau.
Yog hais tias koj muaj tej thickness, txheej, los yog kam rau ua, peb yognpaj los sib tham. Tsuas yog xa koj qhov project parameters -peb yuav teb nrog cov ntaub ntawv, tsis yog kev muag khoom fluff.
